Use GHRepository.Visibility enum instead of a new one.

Author: t0m4uk1991

src/main/java/org/kohsuke/github/GHRepositorySearchBuilder.java

@@ -1,7 +1,5 @@
 package org.kohsuke.github;
 
-import java.util.Locale;
-
 /**
  * Search repositories.
  *
@@ -84,7 +82,11 @@ public GHRepositorySearchBuilder fork(Fork fork) {
      *      by repository visibility</a>
      *
      */
-    public GHRepositorySearchBuilder visibility(Visibility visibility) {
+    public GHRepositorySearchBuilder visibility(GHRepository.Visibility visibility) {
+        if (visibility == GHRepository.Visibility.UNKNOWN) {
+            return this;
+        }
+
         return q("is:" + visibility);
     }
 
@@ -212,17 +214,6 @@ public String toString() {
         }
     }
 
-    /**
-     * The enum Visibility.
-     */
-    public enum Visibility {
-        PUBLIC, INTERNAL, PRIVATE;
-
-        public String toString() {
-            return name().toLowerCase(Locale.ENGLISH);
-        }
-    }
-
     private static class RepositorySearchResult extends SearchResult<GHRepository> {
         private GHRepository[] items;
 

src/test/java/org/kohsuke/github/GHRepositoryTest.java

@@ -417,7 +417,7 @@ public void listCommitCommentsNoComments() throws IOException {
     public void searchAllPublicAndForkedRepos() throws IOException {
         PagedSearchIterable<GHRepository> list = gitHub.searchRepositories()
                 .user("t0m4uk1991")
-                .visibility(GHRepositorySearchBuilder.Visibility.PUBLIC)
+                .visibility(GHRepository.Visibility.PUBLIC)
                 .fork(GHRepositorySearchBuilder.Fork.ALL_INCLUDING_FORKS)
                 .list();
         List<GHRepository> u = list.toList();
@@ -430,7 +430,7 @@ public void searchAllPublicAndForkedRepos() throws IOException {
     public void searchForPublicForkedOnlyRepos() throws IOException {
         PagedSearchIterable<GHRepository> list = gitHub.searchRepositories()
                 .user("t0m4uk1991")
-                .visibility(GHRepositorySearchBuilder.Visibility.PUBLIC)
+                .visibility(GHRepository.Visibility.PUBLIC)
                 .fork(GHRepositorySearchBuilder.Fork.FORKS_ONLY)
                 .list();
         List<GHRepository> u = list.toList();
@@ -439,6 +439,22 @@ public void searchForPublicForkedOnlyRepos() throws IOException {
         assertThat(u.get(1).getName(), is("Complete-Python-3-Bootcamp"));
     }
 
+    @Test
+    public void ghRepositorySearchBuilderIgnoresUnknownVisibility() {
+        GHRepositorySearchBuilder ghRepositorySearchBuilder;
+        ghRepositorySearchBuilder = new GHRepositorySearchBuilder(gitHub).visibility(Visibility.UNKNOWN);
+        assertThat(ghRepositorySearchBuilder.terms.stream().filter(item -> item.contains("is:")).count(), is(0L));
+
+        ghRepositorySearchBuilder = new GHRepositorySearchBuilder(gitHub).visibility(Visibility.PUBLIC);
+        assertThat(ghRepositorySearchBuilder.terms.stream().filter(item -> item.contains("is:")).count(), is(1L));
+
+        ghRepositorySearchBuilder = new GHRepositorySearchBuilder(gitHub).visibility(Visibility.PRIVATE);
+        assertThat(ghRepositorySearchBuilder.terms.stream().filter(item -> item.contains("is:")).count(), is(1L));
+
+        ghRepositorySearchBuilder = new GHRepositorySearchBuilder(gitHub).visibility(Visibility.INTERNAL);
+        assertThat(ghRepositorySearchBuilder.terms.stream().filter(item -> item.contains("is:")).count(), is(1L));
+    }
+
     @Test
     public void listCommitCommentsSomeComments() throws IOException {
         List<GHCommitComment> commitComments = getRepository()